Maintenance and car
e
39
HP
Velotechnik
If the tube is too short after you have cut it so
that there is not enough protection anymore it
has to be replaced.You can buy spare tubes
either as uncut tubes or already cut into the
correct length, complete with retention spring
from your specialist dealer.
Changing the tubes
In order to exchange single parts in the upper
chain tubes cut the old tube at the retention
spring at the chain roller and pull the remai-
ning part off the spring. Now move the
smooth part of the new tube through the
spring and expand the tube end as described
above.
Changing the complete upper chain pro-
tection or the retention spring
Remove the bolt in the chain roller with an
Allen key SW 8.Take off the chain roller, the
big washer and the chain retention hook.
The end of the threaded tube in the frame is
protected with a clear plastic tube.
Take the retention spring off this plastic tube
and put on the new retention spring.Turn the
spring so that the retention springs run under
the spacer to the tubes and the wires lie bet-
ween frame and chain tube; that way the spi-
rals face outwards.
Push the bolt back through the chain roller,
the washer and the chain retention hook, se-
cure the thread with Loctite and tighten the
bolt with 14-16 Nm.The recessed side of the
chain roller has to face to the frame. Make su-
re the washer is placed between chain roller
and plastic tube / frame.
Changing the lower chain tube
Open the retention clip. On the bottom side
of the clip there is a lid that is put over a
hook.You can lift up the lid with a screwdriver
and expand the clip. Change the lower chain
tube and close the clips by fastening the lids
over the hooks.
